My Mewlon 250s with rings, dovetail, diagonal and EP comes close to 38 lbs. With proper balance on my HyperTuned CGEM, I seem to be acceptable for visual. Run it at reduced slew rate to help save motors and gears.
Biggest problem I had on the CGEM was the spindly CG5 tripod. Fixed that with a TPI leg spreader and damping time is about 1.5 seconds, from 5 or 6 seconds before the spreader.
The iOptron has 5 lbs more rated capacity than the CGEM.